:root {
  --green: #4f965c;
  --green-deep: #2f7a3f;
  --green-soft: #edf7ed;
  --mint: #dff0df;
  --gold: #d7aa55;
  --ink: #1f2326;
  --muted: #6d7478;
  --line: rgba(40, 73, 45, 0.12);
  --paper: rgba(255, 255, 255, 0.92);
  --shadow: 0 22px 60px rgba(44, 68, 48, 0.12);
  --soft-shadow: 0 12px 34px rgba(44, 68, 48, 0.09);
  --radius: 28px;
  --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-en: "Avenir Next", "Gill Sans", "Trebuchet MS", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-cn);
  background:
    radial-gradient(circle at 4% 8%, rgba(139, 179, 112, 0.28), transparent 22%),
    radial-gradient(circle at 90% 22%, rgba(220, 240, 210, 0.65), transparent 24%),
    linear-gradient(180deg, #f8fbf4 0%, #fff 42%, #f7fbf4 100%);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; }
.container { width: min(1680px, calc(100% - 128px)); margin: 0 auto; }
.site-shell { min-height: 100vh; overflow: hidden; }

.site-header { position: sticky; top: 0; z-index: 50; padding: 14px 0 0; }
.nav-pill {
  height: 78px;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 0 30px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(44, 68, 48, 0.08);
  box-shadow: 0 16px 46px rgba(33, 53, 37, 0.12);
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 13px; min-width: 260px; }
.brand-mark { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: linear-gradient(135deg, #edf7ed, #fff); box-shadow: inset 0 0 0 1px rgba(55, 118, 65, 0.12); }
.brand-mark img { width: 38px; height: 38px; object-fit: contain; }
.brand-text strong { display: block; font-size: 26px; letter-spacing: 0.03em; line-height: 1; }
.brand-text small { display: block; margin-top: 5px; color: var(--muted); font-family: var(--font-en); font-size: 13px; }
.nav-links { flex: 1; display: flex; justify-content: center; align-items: center; gap: 62px; font-size: 18px; color: #42484a; }
.nav-links a { position: relative; padding: 24px 0; }
.nav-links a.active, .nav-links a:hover { color: var(--green-deep); font-weight: 700; }
.nav-links a.active::after, .nav-links a:hover::after { content: ""; position: absolute; left: 16%; right: 16%; bottom: 12px; height: 3px; border-radius: 99px; background: var(--green); }
.nav-actions { display: flex; align-items: center; gap: 28px; }
.login-link { font-size: 18px; color: #3d4447; }
.nav-cta, .primary-btn, .gold-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  min-height: 56px; padding: 0 34px; border: 0; border-radius: 13px;
  color: #fff; font-weight: 800; font-size: 19px;
  background: linear-gradient(135deg, #69ad6e, #3e8d4c);
  box-shadow: 0 14px 28px rgba(60, 139, 75, 0.26);
}
.secondary-btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 56px; padding: 0 42px; border-radius: 999px;
  color: var(--green-deep); font-weight: 800; font-size: 19px;
  background: rgba(255, 255, 255, 0.72); border: 2px solid rgba(47, 122, 63, 0.72);
}
.secondary-btn.small { min-height: 42px; padding: 0 20px; font-size: 15px; border-width: 1px; }
.nav-toggle { display: none; margin-left: auto; border: 0; background: transparent; width: 42px; height: 42px; }
.nav-toggle span { display: block; height: 2px; margin: 7px 5px; background: var(--green-deep); }

.hero-section { position: relative; padding: 76px 0 32px; }
.soft-leaf { position: absolute; filter: blur(14px); opacity: .48; pointer-events: none; }
.leaf-left { left: -60px; top: 40px; width: 230px; height: 520px; background: radial-gradient(ellipse, rgba(92, 140, 70, .35), transparent 62%); transform: rotate(-18deg); }
.leaf-right { right: -60px; bottom: 0; width: 260px; height: 480px; background: radial-gradient(ellipse, rgba(111, 160, 88, .2), transparent 64%); transform: rotate(16deg); }
.hero-grid { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: 64px; align-items: center; }
.hero-copy { padding: 30px 0 40px 58px; }
.hero-kicker { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: 999px; color: var(--green-deep); background: rgba(255,255,255,.75); box-shadow: var(--soft-shadow); font-weight: 700; }
.hero-copy h1 { margin: 34px 0 24px; font-size: clamp(42px, 4.7vw, 78px); line-height: 1.22; letter-spacing: -0.04em; }
.hero-copy h1 span { color: var(--green); }
.hero-copy p { max-width: 640px; margin: 0; color: #4f5659; font-size: 21px; line-height: 1.9; }
.hero-actions { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; margin-top: 34px; }
.trust-line { display: inline-flex; align-items: center; gap: 10px; margin-top: 34px; padding: 12px 20px; border-radius: 999px; background: rgba(255,255,255,.72); color: #4a5356; font-weight: 700; }
.trust-line span { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--green); color: #fff; }

.product-preview { display: grid; grid-template-columns: 124px minmax(330px, 1fr) 390px; gap: 14px; padding: 22px; border-radius: 38px; background: rgba(255,255,255,.78); border: 1px solid rgba(44, 68, 48, 0.1); box-shadow: 0 24px 70px rgba(44,68,48,.16); }
.preview-sidebar, .preview-card { background: rgba(255,255,255,.88); border: 1px solid rgba(44,68,48,.08); box-shadow: var(--soft-shadow); }
.preview-sidebar { border-radius: 26px; padding: 25px 12px; text-align: center; }
.avatar-face { width: 48px; height: 48px; margin: 0 auto 8px; display: grid; place-items: center; border-radius: 50%; background: #f1f7eb; }
.preview-sidebar strong { display: block; font-size: 14px; }
.preview-sidebar span { display: inline-block; margin: 8px 0 18px; color: var(--green-deep); font-weight: 800; }
.preview-sidebar nav { display: grid; gap: 8px; text-align: left; }
.preview-sidebar nav a { padding: 12px 10px; border-radius: 10px; color: #596164; font-size: 13px; }
.preview-sidebar nav a.active { background: var(--green-soft); color: var(--green-deep); font-weight: 800; }
.preview-main, .preview-side { display: grid; gap: 14px; }
.preview-card { border-radius: 22px; padding: 18px; }
.preview-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; color: #687073; }
.preview-head strong { color: #28302d; font-size: 17px; }
.zoo-board { position: relative; min-height: 320px; border-radius: 18px; overflow: hidden; background: linear-gradient(#cde7f3 0 42%, #bfe1a5 43% 100%); }
.zoo-board::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 20% 28%, #6ca052 0 4%, transparent 5%), radial-gradient(circle at 72% 32%, #8dba6e 0 7%, transparent 8%), linear-gradient(90deg, transparent 0 44%, rgba(160,101,39,.3) 45% 48%, transparent 49%); opacity: .8; }
.word-bubble { position: absolute; z-index: 2; border: 0; border-radius: 9px; padding: 10px 13px; background: rgba(255,255,255,.94); box-shadow: 0 7px 18px rgba(23,40,28,.16); cursor: pointer; font-family: var(--font-en); font-size: 17px; }
.word-bubble.active, .word-bubble:hover { outline: 3px solid rgba(79,150,92,.22); transform: translateY(-2px); }
.word-bubble i { font-style: normal; color: var(--green); }
.lion { left: 8%; top: 28%; } .giraffe { left: 45%; top: 18%; } .elephant { right: 10%; bottom: 24%; } .monkey { left: 20%; bottom: 13%; }
.zoo-animal { position: absolute; bottom: 24px; border-radius: 50%; background: rgba(117,82,45,.45); }
.zoo-animal.a1 { left: 12%; width: 110px; height: 78px; } .zoo-animal.a2 { left: 52%; width: 138px; height: 98px; background: rgba(120,132,132,.52); } .zoo-animal.a3 { right: 11%; width: 66px; height: 88px; background: rgba(86,62,35,.44); }
.read-status { margin-top: 12px; color: var(--green-deep); font-weight: 800; text-align: center; }
.book-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.book-row a, .book-row span { min-height: 142px; border-radius: 12px; display: grid; place-items: center; overflow: hidden; background: linear-gradient(145deg, #f5dfb0, #e8f1df); box-shadow: inset 0 0 0 1px rgba(75, 92, 64, .1); font-size: 13px; text-align: center; padding: 10px; }
.book-row img { width: 100%; height: 142px; object-fit: cover; }
.chat-card { display: grid; gap: 10px; }
.chat-line { width: fit-content; max-width: 88%; padding: 12px 18px; border-radius: 999px; color: #4e5658; background: #eef5ed; }
.chat-line.right { margin-left: auto; background: #f3f3f3; }

.quick-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 24px; }
.quick-card { display: grid; grid-template-columns: 150px 1fr 44px; align-items: center; gap: 24px; padding: 18px; border-radius: 24px; background: var(--paper); border: 1px solid var(--line); box-shadow: var(--soft-shadow); }
.quick-card h2 { margin: 0 0 10px; font-size: 25px; }
.quick-card p { margin: 0; color: var(--muted); line-height: 1.7; }
.quick-card > strong, .circle-link { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--green-soft); color: var(--green-deep); font-size: 34px; font-family: var(--font-en); }
.quick-img { height: 118px; border-radius: 18px; background: #e8f2df; position: relative; overflow: hidden; }
.quick-img span { position: absolute; left: 34px; bottom: 24px; display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--green); color: #fff; }
.scene-quick { background: linear-gradient(145deg, #c9e8c0, #e9f4da); }
.book-quick { background: linear-gradient(145deg, #f3deb4, #fff6db); }
.book-quick::after { content: ""; position: absolute; inset: 26px 28px 20px; border-radius: 50% 50% 8px 8px; background: #fff; box-shadow: 20px 0 0 #f6eddc, -20px 0 0 #f6eddc; }
.talk-quick { background: linear-gradient(145deg, #e4f3dc, #fff); }
.talk-quick::before, .talk-quick::after { content: ""; position: absolute; top: 28px; width: 46px; height: 46px; border-radius: 50%; background: #f2c49a; } .talk-quick::before { left: 34px; } .talk-quick::after { right: 34px; background: #f5b3a9; }

.growth-band { margin-top: 28px; display: grid; grid-template-columns: 260px 1fr 330px; gap: 18px; align-items: center; padding: 26px 30px; border-radius: 0; background: rgba(243, 249, 238, .9); border-block: 1px solid rgba(44,68,48,.08); }
.growth-title h2 { margin: 0 0 9px; font-size: 28px; } .growth-title p { margin: 0; color: var(--muted); }
.growth-features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.growth-features div { display: grid; grid-template-columns: 48px 1fr; column-gap: 12px; align-items: center; min-height: 76px; padding: 12px 16px; border-radius: 15px; background: rgba(255,255,255,.86); }
.growth-features span { grid-row: span 2; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--mint); color: var(--green-deep); font-weight: 900; }
.growth-features strong { font-size: 16px; } .growth-features small { color: var(--muted); }
.progress-card { padding: 18px 20px; border-radius: 16px; background: #fff; box-shadow: var(--soft-shadow); }
.progress-card span { color: var(--muted); } .progress-card strong { float: right; color: var(--ink); }
.bars { clear: both; display: flex; align-items: end; gap: 16px; height: 58px; padding-top: 14px; }
.bars i { flex: 1; border-radius: 99px 99px 0 0; background: #d9dfe0; height: 24px; } .bars i:nth-child(-n+5) { background: var(--green); } .bars i:nth-child(3) { height: 48px; } .bars i:nth-child(5) { height: 42px; }

.section-title { margin: 74px 0 24px; } .section-title span, .library-head span, .sub-hero-inner span, .eyebrow, .mini-copy span { color: var(--green-deep); font-weight: 900; font-family: var(--font-en); letter-spacing: .08em; text-transform: uppercase; }
.section-title h2 { margin: 10px 0 0; font-size: 38px; }
.content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.content-grid.compact { grid-template-columns: repeat(2, 1fr); }
.content-card { position: relative; display: grid; grid-template-columns: 180px 1fr; gap: 18px; min-height: 188px; padding: 16px; border-radius: 24px; background: var(--paper); border: 1px solid var(--line); box-shadow: var(--soft-shadow); }
.content-cover { border-radius: 18px; overflow: hidden; background: #eef6e8; }
.content-cover img { width: 100%; height: 100%; object-fit: cover; }
.cover-placeholder { height: 100%; min-height: 150px; display: grid; place-items: center; border-radius: 18px; background: linear-gradient(145deg, #e9f5e8, #fff8e8); color: var(--green-deep); font-weight: 900; }
.cover-placeholder.large { min-height: 360px; }
.content-info { min-width: 0; }
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.pill-row span { padding: 7px 11px; border-radius: 999px; background: var(--green-soft); color: var(--green-deep); font-size: 12px; font-weight: 800; }
.content-info h3 { margin: 0 0 8px; font-size: 22px; }
.content-info p { margin: 0; color: var(--muted); line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.content-info .circle-link { position: absolute; right: 18px; bottom: 18px; width: 36px; height: 36px; font-size: 28px; }
.pricing-card { margin-top: 42px; display: grid; grid-template-columns: 92px 230px 1fr auto; gap: 28px; align-items: center; padding: 28px 34px; border-radius: 22px; background: linear-gradient(90deg, #fff8e8, #fff); border: 1px solid rgba(191, 151, 75, .22); box-shadow: var(--shadow); }
.crown { display: grid; place-items: center; width: 82px; height: 82px; border-radius: 50%; color: #fff; background: linear-gradient(135deg, #e1bd70, #c99c49); font-size: 44px; }
.pricing-copy h2 { margin: 0 0 8px; font-size: 30px; } .pricing-copy p { margin: 0; color: var(--muted); }
.pricing-items { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; color: #384044; font-weight: 700; }
.gold-btn { background: linear-gradient(135deg, #e4bd70, #cfa254); box-shadow: 0 14px 28px rgba(192, 137, 45, .24); }
.mini-program-section { margin-top: 42px; margin-bottom: 34px; display: grid; grid-template-columns: 1fr 180px; align-items: center; gap: 30px; padding: 32px; border-radius: 26px; background: #fff; border: 1px solid var(--line); box-shadow: var(--soft-shadow); }
.mini-copy h2 { margin: 8px 0 10px; font-size: 32px; } .mini-copy p { margin: 0; color: var(--muted); line-height: 1.7; }
.qr-card { position: relative; width: 160px; height: 160px; margin: 0 auto; border-radius: 22px; background: #fff; border: 1px solid var(--line); display: grid; place-items: center; overflow: hidden; }
.qr-image { width: 100%; height: 100%; object-fit: cover; }
.qr-pattern { width: 94px; height: 94px; background: repeating-linear-gradient(90deg, #233 0 8px, transparent 8px 14px), repeating-linear-gradient(0deg, rgba(79,150,92,.85) 0 8px, transparent 8px 14px); opacity: .18; border-radius: 12px; }
.qr-loading { position: absolute; inset: 0; display: grid; place-items: center; padding: 18px; text-align: center; color: var(--muted); font-size: 13px; background: rgba(255,255,255,.78); }

.sub-hero, .detail-hero-section, .article-hero-section { padding: 76px 0 34px; }
.sub-hero-inner, .article-shell { padding: 60px; border-radius: 32px; background: rgba(255,255,255,.78); box-shadow: var(--soft-shadow); }
.sub-hero h1, .article-shell h1 { max-width: 920px; margin: 14px 0 16px; font-size: clamp(38px, 4vw, 62px); line-height: 1.25; letter-spacing: -0.03em; }
.sub-hero p, .article-shell p { max-width: 760px; color: var(--muted); font-size: 20px; line-height: 1.8; }
.library-layout { display: grid; grid-template-columns: 300px 1fr; gap: 30px; align-items: start; }
.filter-panel, .sticky-card { position: sticky; top: 110px; padding: 24px; border-radius: 24px; background: var(--paper); border: 1px solid var(--line); box-shadow: var(--soft-shadow); }
.filter-panel h2 { margin: 0 0 16px; }
.filter-list { display: flex; flex-wrap: wrap; gap: 10px; }
.filter-chip { border: 1px solid rgba(79,150,92,.24); border-radius: 999px; background: #fff; color: #4c5558; padding: 9px 14px; cursor: pointer; }
.filter-chip.active, .filter-chip.is-active { color: #fff; background: var(--green); }
.tip-box { margin-top: 22px; padding: 16px; border-radius: 16px; background: var(--green-soft); color: #48604c; line-height: 1.7; }
.library-head { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 22px; }
.library-head h2 { margin: 7px 0 0; font-size: 34px; }
.load-more-wrap { display: grid; place-items: center; margin: 30px 0; }
.detail-hero-card { display: grid; grid-template-columns: 390px 1fr; gap: 40px; padding: 34px; border-radius: 34px; background: var(--paper); box-shadow: var(--shadow); border: 1px solid var(--line); }
.detail-hero-card.wide { grid-template-columns: minmax(420px, 0.9fr) 1fr; }
.detail-cover { border-radius: 26px; overflow: hidden; background: var(--green-soft); min-height: 360px; }
.detail-cover img { width: 100%; height: 100%; object-fit: cover; }
.detail-copy { align-self: center; }
.crumb { display: inline-flex; margin-bottom: 18px; color: var(--green-deep); font-weight: 800; }
.detail-copy h1 { margin: 10px 0; font-size: clamp(36px, 4vw, 60px); line-height: 1.2; }
.en-title { font-family: var(--font-en); color: var(--muted); font-size: 22px; }
.detail-copy > p:not(.en-title) { color: var(--muted); line-height: 1.85; font-size: 18px; }
.word-tags { display: flex; flex-wrap: wrap; gap: 9px; margin: 18px 0; }
.word-tags span { padding: 8px 12px; border-radius: 999px; background: #fff; color: var(--green-deep); border: 1px solid var(--line); }
.detail-layout, .article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 34px; align-items: start; margin-top: 30px; }
.detail-main { display: grid; gap: 22px; }
.detail-main h2 { margin: 20px 0 0; font-size: 30px; }
.page-list { display: grid; gap: 16px; }
.page-item { display: grid; grid-template-columns: 150px 1fr; gap: 18px; padding: 16px; border-radius: 20px; background: #fff; box-shadow: var(--soft-shadow); border: 1px solid var(--line); }
.page-thumb { min-height: 120px; border-radius: 16px; overflow: hidden; background: var(--green-soft); display: grid; place-items: center; color: var(--green-deep); font-weight: 900; }
.page-thumb img { width: 100%; height: 100%; object-fit: cover; }
.page-item p { color: var(--muted); line-height: 1.7; } .page-item small { color: #7a8285; }
.hotspot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.hotspot-card { padding: 18px; border-radius: 18px; background: #fff; border: 1px solid var(--line); box-shadow: var(--soft-shadow); }
.hotspot-card strong { display: block; font-size: 20px; } .hotspot-card span { color: var(--green-deep); } .hotspot-card p { color: var(--muted); line-height: 1.6; }
.guide-grid-section { margin-top: 20px; }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.guide-card { padding: 26px; border-radius: 24px; background: #fff; border: 1px solid var(--line); box-shadow: var(--soft-shadow); }
.guide-tag { color: var(--green-deep); font-family: var(--font-en); font-weight: 900; letter-spacing: .06em; }
.guide-card h3 { font-size: 24px; line-height: 1.35; } .guide-card p { color: var(--muted); line-height: 1.7; }
.text-link { color: var(--green-deep); font-weight: 900; }
.article-body { padding: 38px; border-radius: 28px; background: #fff; box-shadow: var(--soft-shadow); border: 1px solid var(--line); line-height: 1.9; color: #3f474a; font-size: 18px; }
.article-body h1, .article-body h2, .article-body h3 { color: var(--ink); line-height: 1.35; }
.empty-page { min-height: 56vh; display: grid; align-content: center; justify-items: start; padding-block: 100px; }
.empty-page span { color: var(--green); font-size: 84px; font-weight: 900; } .empty-page h1 { font-size: 48px; margin: 0 0 12px; } .empty-page p { color: var(--muted); }

@media (max-width: 1280px) {
  .container { width: min(100% - 48px, 1180px); }
  .nav-links { gap: 28px; }
  .brand { min-width: 220px; }
  .brand-text strong { font-size: 22px; }
  .hero-grid, .product-preview, .growth-band, .pricing-card { grid-template-columns: 1fr; }
  .hero-copy { padding-left: 0; }
  .preview-sidebar { display: none; }
  .product-preview { grid-template-columns: 1fr 360px; }
  .growth-features, .pricing-items { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .container { width: min(100% - 28px, 760px); }
  .site-header { padding-top: 8px; }
  .nav-pill { height: auto; min-height: 68px; flex-wrap: wrap; padding: 10px 16px; }
  .nav-toggle { display: block; }
  .nav-links, .nav-actions { display: none; width: 100%; }
  .nav-pill.menu-open .nav-links, .nav-pill.menu-open .nav-actions { display: grid; gap: 12px; justify-content: stretch; }
  .nav-links a { padding: 10px 0; }
  .nav-links a::after { display: none; }
  .nav-actions { padding-bottom: 10px; }
  .hero-section { padding-top: 34px; }
  .hero-copy h1 { font-size: 42px; }
  .product-preview, .quick-cards, .content-grid, .content-grid.compact, .library-layout, .detail-layout, .article-layout, .guide-grid, .detail-hero-card, .detail-hero-card.wide, .mini-program-section { grid-template-columns: 1fr; }
  .preview-side { grid-template-columns: 1fr; }
  .quick-card { grid-template-columns: 100px 1fr; }
  .quick-card > strong { display: none; }
  .growth-features, .pricing-items, .hotspot-grid { grid-template-columns: 1fr; }
  .filter-panel, .sticky-card { position: static; }
  .sub-hero-inner, .article-shell { padding: 32px; }
}